Sedimentation : Exclusion and Removal of Sediment from Diverted Water

ISBN-13: 9789054101321 / Angielski / Twarda / 1993 / 173 str.

Arved J. Raudkivi; A. J. Raudkivi;Raudkivi

Opis

This monograph provides the practising engineer with a concise overview of the methods of water diversion and exclusion or removal of sediment from the diverted water. The emphasis is on flow features and the associated conveyance of sediments.

Spis treści

PREFACE -- LIST OF SYMBOLS -- 1 INTRODUCTION -- 2 BASIC CONCEPTS OF SOIL EROSION AND SEDIMENT TRANSPORT -- 2.1 Sediment characteristics -- 2.2 Sediment entrainment -- 2.3 Channel roughness -- 2.4 Sediment transport -- 2.5 Some aspects of river morphology -- 2.5.1 Large scale features -- 2.5.2 Bed features -- 2.5.3 Scouring of the river bed -- 2.5.4 Secondary currents -- 2.6 Degradation and aggradation -- 2. 7 Soil erosion and sediment yield -- 2.8 Sediment control -- 3 RIVER INTAKES -- 3 .1 Introduction -- 3.2 General features of flow diversion -- 3.2.1 Flow patterns -- 3.2.2 Sediment transport -- 3.2.3 The lateral diversion -- 3.3 Small intakes -- 3.4 Pump intakes -- 3.5 Intakes from mountain streams -- 3.5.1 The bottom screen intake -- 3.5.2 Pier intakes -- 3.6 Intakes from large rivers -- 3.6.1 Intakes without a barrage -- 3.6.2 Intakes with barrage -- 3.6.3 Dividing walls -- 3.6.4 Undersluices -- 3.6.5 Diversion entrance -- 3.6.6 Excluder tunnels -- 3.6.7 Guide vanes -- 4 INTERCEPTION AND REMOVAL OF SEDIMENT FROM DIVERTED WATER -- 4.1 Sediment removal by settling -- 4.2 Settling tanks with continuous flushing -- 4.3 Sediment ejectors -- 4.4 Vortex tube sand trap -- 4.5 Vortex chamber -- 5 RESERV OIR SEDIMENTATION -- 5 .1 Incoming sediment -- 5.2 Trap efficiency -- 5.3 Sediment distribution in reservoirs -- 5 .4 Rehabilitation of reservoirs -- REFERENCES -- SUBJECT INDEX.

O autorze

Auckland, New Zealand.